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Home > Archive>Volume 50, Issue 1, 2021 >63-70. DOI:10.12442/j.issn.1002-185X.20191017
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Influence of SnO2 content on AgCuOSnO2 electrical contact preformance
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Kunming University of Science and Technology

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    Abstract:

    AgCuOSnO2 electrical contact materials with different SnO2 contents were prepared by reaction synthesis. In this paper, FQR-7501 eddy current conductivity meter is used to measure the conductivity of the polished AgCuOSnO2. The erosion morphology of the surface of the AgCuOSnO2 electrical contact is observed and studied by Scanning Electron Microscope (SEM). The JF04C DC digital resistance tester is used to carry out 10000 dot tests. The results show that the contact resistance of AgCuO(10)SnO2(5) and AgCuO(10)SnO2(8) electric contact materials is lower than 1.3mΩ at U = 12V and I = 15A, and the fluctuation is the smallest; when I = 10A, the welding force of AgCuO(10)SnO2 (x, x = 2,5,8) is less than 8cN, and the welding force of AgCuO(10)SnO2(5) electric contact is small and stable when the current increases; when the arc erosion of AgCuOSnO2 electric contact materials occurs, the material transfer way is from anode to cathode. With the increasing of SnO2 content, the loss in the process of material transfer is restrained and reduced. There are little pores and microcracks on the surface of the transferred electrical contact, and the surface morphology is relatively flat.

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[Minjie Yanga, Manmen Liu, Fang Yao, Xiaolong Li, Xiaolong Zhou. Influence of SnO2 content on AgCuOSnO2 electrical contact preformance[J]. Rare Metal Materials and Engineering,2021,50(1):63~70.]
DOI：10.12442/j. issn.1002-185X.20191017

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History
  • Received:December 02,2019
  • Revised:May 04,2020
  • Adopted:May 08,2020
  • Online: February 05,2021

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